Moisture induced strains in spruce from homogenization and transient moisture transport analysis

Šejnoha, Michal; Sýkora, Jan; Vorel, Jan; Kucíková, Lucie; Antoš, Jakub; Pokorný, Jaroslav; Pavlík, Zbyšek

doi:10.1016/j.compstruc.2019.04.008

Cited by 8 publications

(8 citation statements)

References 42 publications

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“…• In case of the Mori-Tanaka method the properly chosen type and shape of the inclusion representing lumens plays a crucial role particularly when searching for effective moisture diffusivities. Such a statement has recently been supported by the results presented in [5,36].…”

Section: Numerical Examples and Resultssupporting

confidence: 57%

“…This has been confirmed in [3] clearly demonstrating the mechanosorption effects investigated experimentally at the level of annual rings during creep experiments through the measurements of local strains using the grid method. Similar works allowing for full field measurements of strain profiles, although limited to free swelling caused by moisture uptake, were reported in [4,5] exploiting the digital image correlation method.…”

Section: Introductionmentioning

confidence: 74%

“…In most MT calculations the lumens are represented by an ellipsoid with semi-axes taken from [35]. 5 The discrepancies in terms of phase volume fractions evident in Fig. 4(a) and Table 1 resulted in relatively large differences in the MT predictions at the level of wood as seen in Fig.…”

Section: Numerical Examples and Resultsmentioning

confidence: 99%

“…This is not an easy task. A quick estimate is available based on the dry wood density [16] with some improvements proposed in [5]. More reliable approach was expected from the application of computational micro-tomography.…”

Section: Numerical Examples and Resultsmentioning

confidence: 99%

“…Both issues are being currently addressed and the results will be presented elsewhere. Some initiatives can be found in [11,5,36].…”

Section: Numerical Examples and Resultsmentioning

confidence: 99%

See 4 more Smart Citations

Effective material properties of wood based on homogenization

Šejnoha¹,

Kucíková²,

Vorel³

et al. 2019

Int. J. CMEM

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This paper is concerned with the evaluation of effective material properties of wood. Since both mechanical loading and climatic changes play a crucial role in the prediction of wood response, we consider not only stiffness, but also non-mechanical properties driving the heat and moisture transport and thus indirectly addressing the swelling and shrinkage properties of wood. In this regard, classical micromechanical models as well as numerical simulations based on the Extended Finite Element Method are examined. A special attention is devoted to the influence of microstructural details of the porous phase. To that end, the X-ray computational micro-tomography is adopted when seeking for information beyond the volume fraction of phases that can be identified at various levels of a hierarchical arrangement of wood. A spruce wood is selected as one particular example to compare individual computational approaches.

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Section: Numerical Examples and Resultssupporting

confidence: 57%